I bought this game here and the one contained in the DVD "Heroes of Might and Magic Collection". The DVD contains Heroes 1 to 5, including the expansions, and yes, it contains the Heroes 2 expansions. The difference is as follows: -- This here at gog is for DosBox. Selecting the correct Graphic setup and changing the settings in the config file of DosBox gets me Heroes in a nice window with the correct scalings. But the sound sometimes is not very sound. For example, the teleport sound on the adventure map is just a nasty scratching sound. -- The DVD starts in fullscreen and loads music from DVD. The tracks can be played in a player from DVD. The quality seems better. But the teleporter sound is missing. The game starts in fullscreen, I do not know how to change that.